<template>
	<div class="type-nav">
		<div class="container">
			<div class="nav-left" @mouseleave="handleMouseLeave">
				<h2 class="all" @mouseenter="isShowNav = true">全部商品分类</h2>
				<transition
					enter-active-class="animate__fadeIn"
					leave-active-class="animate__fadeOut"
				>
					<div class="animate__animated sort" v-show="isShowNav">
						<div class="all-sort-list2" @click="toSearch">
							<div class="item" v-for="c1 in categoryList" :key="c1.categoryId">
								<h3>
									<!-- 一级导航链接 -->
									<a data-level="1" :data-id="c1.categoryId" :data-name="c1.categoryName">{{c1.categoryName}}</a>
								</h3>
								<div class="item-list clearfix">
									<div class="subitem">
										<dl class="fore" v-for="c2 in c1.categoryChild" :key="c2.categoryId">
											<dt>
												<!-- 二级导航链接 -->
												<a data-level="2" :data-id="c2.categoryId" :data-name="c2.categoryName">{{c2.categoryName}}</a>
											</dt>
											<dd>
												<em v-for="c3 in c2.categoryChild" :key="c3.categoryId">
													<!-- 三级导航链接 -->
													<a data-level="3" :data-id="c3.categoryId" :data-name="c3.categoryName">{{c3.categoryName}}</a>
												</em>
											</dd>
										</dl>
									</div>
								</div>
							</div>
						</div>
					</div>
				</transition>
			</div>
			<nav class="nav">
				<a href="###">服装城</a>
				<a href="###">美妆馆</a>
				<a href="###">尚品汇超市</a>
				<a href="###">全球购</a>
				<a href="###">闪购</a>
				<a href="###">团购</a>
				<a href="###">有趣</a>
				<a href="###">秒杀</a>
			</nav>
		</div>
	</div>
</template>

<script>
	import {mapState} from 'vuex'
	import "animate.css"

	export default {
		name: 'TypeNav',
		data() {
			return {
				isShowNav:false
			}
		},
		methods: {
			//跳转seacrh路由
			toSearch(event){
				//获取点击分类的信息
				const {level,id,name} = event.target.dataset
				//若点击的不是分类导航，终止逻辑
				if(!level) return
				//握住之前路由的query参数
				const {query} = this.$route
				//跳转search路由，且携带参数
				this.$router.push({
					name:'search',
					query:{
						['category'+level+'Id']:id, //分类id
						categoryName:name, //分类名
						keyword:query.keyword
					}
				})
			},
			//响应鼠标移出导航区
			handleMouseLeave(){
				if(!this.$route.meta.isRequiredNav){
					this.isShowNav = false
				}
			}
		},
		computed: {
			//映射vuex中state里的home分类下的categoryList（分类数据）
			...mapState('home',['categoryList'])
		},
		mounted() {
			//根据当前路径决定是否初始化显示导航下拉框
			if(this.$route.meta.isRequiredNav){
				this.isShowNav = true
			}
		}
	}
</script>

<style lang="less" scoped>
	.type-nav {
		border-bottom: 2px solid #e1251b;

		.container {
			width: 1200px;
			margin: 0 auto;
			display: flex;
			position: relative;

			.all {
				width: 210px;
				height: 45px;
				background-color: #e1251b;
				line-height: 45px;
				text-align: center;
				color: #fff;
				font-size: 14px;
				font-weight: bold;
			}

			.nav {
				a {
					height: 45px;
					margin: 0 22px;
					line-height: 45px;
					font-size: 16px;
					color: #333;
				}
			}

			.sort {
				position: absolute;
				left: 0;
				top: 45px;
				width: 210px;
				height: 461px;
				position: absolute;
				background: #fafafa;
				z-index: 999;
				--animate-duration: 0.5s;

				.all-sort-list2 {
					.item {
						h3 {
							line-height: 30px;
							font-size: 14px;
							font-weight: 400;
							overflow: hidden;
							padding: 0 20px;
							margin: 0;

							a {
								color: #333;
								text-decoration: none;
							}
						}

						.item-list {
							display: none;
							position: absolute;
							width: 734px;
							min-height: 460px;
							background: #f7f7f7;
							left: 210px;
							border: 1px solid #ddd;
							top: 0;
							z-index: 9999 !important;

							.subitem {
								float: left;
								width: 650px;
								padding: 0 4px 0 8px;
								dl {
									border-top: 1px solid #eee;
									padding: 6px 0;
									overflow: hidden;
									zoom: 1;

									&.fore {
										border-top: 0;
									}

									dt {
										float: left;
										width: 54px;
										line-height: 22px;
										text-align: right;
										padding: 3px 6px 0 0;
										font-weight: 700;
										a{
											text-decoration: none;
											&:hover{
												cursor: pointer;
												color:#E1251B !important;
												font-weight: bold;
											}
										}
									}

									dd {
										float: left;
										width: 415px;
										padding: 3px 0 0;
										overflow: hidden;

										em {
											float: left;
											height: 14px;
											line-height: 14px;
											padding: 0 8px;
											margin-top: 5px;
											border-left: 1px solid #ccc;
											a{
												text-decoration: none;
											&:hover{
												cursor: pointer;
												color:#E1251B !important;
												font-weight: bold;
											}
										}
										}
									}
								}
							}
						}

						&:hover {
							h3{
								background-color: #E1251B;
								a{
									color: white !important;
									cursor: pointer;
								}
							}
							.item-list {
								display: block;
							}
						}
					}
				}
			}
		}
	}
</style>